US Patent 9202400 Frame trim extrusion

An elongated rail member for end-wise attachment to a further elongated rail member for the manufacture of a two-sided flexible fabric display supporting quadrilateral-frame-assembly, each elongated rail member comprising an elongated outermost bridging member; an innermost elongated bridging member and an intermediate elongated bridging member each connected along their elongated edges by a first side member and a second side member resectively, including a graphic bead supporting slot arranged on each side of an elongated bridging member to enable simultaneous one or two sided display of a flexible graphic.